Minor, add toString() for debug

compiler/backend/src/org/jetbrains/kotlin/codegen/MutableClassDescriptor.java

@@ -22,6 +22,7 @@ import org.jetbrains.kotlin.descriptors.*;
 import org.jetbrains.kotlin.descriptors.annotations.Annotations;
 import org.jetbrains.kotlin.descriptors.impl.ClassDescriptorBase;
 import org.jetbrains.kotlin.descriptors.impl.ConstructorDescriptorImpl;
+import org.jetbrains.kotlin.descriptors.impl.DeclarationDescriptorImpl;
 import org.jetbrains.kotlin.name.Name;
 import org.jetbrains.kotlin.resolve.scopes.JetScope;
 import org.jetbrains.kotlin.storage.LockBasedStorageManager;
@@ -163,4 +164,9 @@ public class MutableClassDescriptor extends ClassDescriptorBase implements Class
     public JetScope getStaticScope() {
         return JetScope.Empty.INSTANCE$;
     }
+
+    @Override
+    public String toString() {
+        return DeclarationDescriptorImpl.toString(this);
+    }
 }

core/descriptors/src/org/jetbrains/kotlin/descriptors/impl/DeclarationDescriptorImpl.java

@@ -57,7 +57,7 @@ public abstract class DeclarationDescriptorImpl extends AnnotatedImpl implements
     }
 
     @NotNull
-    /* package */ static String toString(@NotNull DeclarationDescriptor descriptor) {
+    public static String toString(@NotNull DeclarationDescriptor descriptor) {
         try {
             return DescriptorRenderer.DEBUG_TEXT.render(descriptor) +
                    "[" + descriptor.getClass().getSimpleName() + "@" + Integer.toHexString(System.identityHashCode(descriptor)) + "]";